Evergreen trees · leaf area index · SUEWS parameter database

browse · records/surfaces/evetr/beijing--ward2016--lai.yml

Evergreen trees · leaf area index — Coniferous treesevetr evidence record

lai.lai_type0

lai.lai_min4

lai.lai_max5.1

lai evetr generic generic Land-cover class Järvi 2011

Parameters

Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.

`lai.lai_type`	0
`lai.lai_min`	4
`lai.lai_max`	5.1

Provenance evidence

Awaiting sign-off

Published value · assessed by provenance-audit · 2026-08-24. Agent assessment is evidence preparation, not human verification.

The Surface Urban Energy and Water Balance Scheme (SUEWS): Evaluation in Los Angeles and Vancouver.Parameter source

Where: Sect. 2.2, Leaf area index, p. 221

Defines the original dynamic SUEWS LAI response represented by lai_type 0.

Where: Table 2, model parameter values by surface type and general model run options, p. 223

Publishes LAImax,con = 5.1 and LAImin,con = 4 for the coniferous-tree category.

Surface Urban Energy and Water Balance Scheme (SUEWS): Development and evaluation at two UK sitesValidation

Where: Sect. 3.1, Description of sites, p. 4

Defines the evaluation domain as central London and suburban Swindon; Beijing is not a study site.

Where: Sect. 4.1, Seasonal cycle of vegetation phenology, p. 7

Evaluates LAI timing and changes degree-day temperatures but does not publish 4/5.1 as Ward bounds.

Assessment findings

Name	supported Coniferous trees normalizes the surface label used by Järvi et al. for the SUEWS category; the former sample-data qualifier had no support in the publication.
Target	supported Järvi et al. publish the bounds for the coniferous-tree surface represented by land_cover.evetr.
Values	supported Table 2 publishes LAImax,con = 5.1 and LAImin,con = 4 and presents the original dynamic LAI option represented by lai_type 0; the stored values are unchanged.
Source	supported Järvi et al. directly publish the complete parameter set. Ward et al. evaluate SUEWS only at London and Swindon and do not publish these bounds as Ward or Beijing evidence. issue #113
Place	supported Generic is the supported active place because Järvi Table 2 presents model parameters by surface type rather than a Beijing determination, while Ward studies only two UK sites.
Representativeness	supported Generic is the supported evidence scope for a literature/default parameter set tabulated by land-cover category, not measured for one city or site.
Applicable Scale	supported The bounds apply to the coniferous-tree land-cover category in the SUEWS parameter table.
Method	supported The record transcribes a published parameter set without fitting or calculation in this database.
Identity	supported The stable Beijing path, origin and legacy ID retain migration lineage, while the active evidence fields now identify the generic Järvi literature set. Its lai_type 0 distinguishes it from the later type-1 records carrying the same rounded bounds.

Scientific note

Järvi et al. are the direct publication source for the unchanged coniferous-tree LAI values and original LAI equation. Ward et al. later evaluate phenology at London and Swindon but supply neither Beijing evidence nor a new 4/5.1 fit. The active fields now describe a generic land-cover literature default; the stable Beijing path, origin and legacy ID remain solely as migration lineage.

Model-ready fragment

Paste under land_cover.evetr in a SUEWS YAML configuration; every value carries its citation.

lai:
  lai_type:
    value: 0
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  lai_min:
    value: 4
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  lai_max:
    value: 5.1
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover